Description of problem: At some point my program gives the error below when mkdir(2) is called (probably not the first time that mkdir is called, so that may just be a coincidence). BUG: MAX_STACK_TRACE_ENTRIES too low! turning off the locking correctness validator. Pid: 1, comm: guestfsd Tainted: G W 2.6.31-0.11.rc0.git13.fc12.x86_64 #1 Call Trace: [<ffffffff81092a14>] save_trace+0x9d/0xba [<ffffffff81092abb>] add_lock_to_list+0x8a/0xe5 [<ffffffff810952ac>] __lock_acquire+0xad2/0xc17 [<ffffffff814dd3a5>] ? schedule+0x147/0x83b [<ffffffff810954df>] lock_acquire+0xee/0x12e [<ffffffff814dd3a5>] ? schedule+0x147/0x83b [<ffffffff814dd3a5>] ? schedule+0x147/0x83b [<ffffffff814e06a4>] _spin_lock_irq+0x51/0x9a [<ffffffff814dd3a5>] ? schedule+0x147/0x83b [<ffffffff814dd3a5>] schedule+0x147/0x83b [<ffffffff81089666>] ? clocksource_read+0x22/0x38 [<ffffffff81089a76>] ? getnstimeofday+0x6e/0xd8 [<ffffffff8108383e>] ? ktime_get_ts+0x61/0x7d [<ffffffff81163909>] ? sync_buffer+0x0/0x6e [<ffffffff814ddbb0>] io_schedule+0x44/0x6b [<ffffffff8116395f>] sync_buffer+0x56/0x6e [<ffffffff81163909>] ? sync_buffer+0x0/0x6e [<ffffffff814de344>] __wait_on_bit+0x57/0x9e [<ffffffff814de408>] out_of_line_wait_on_bit+0x7d/0x9c [<ffffffff81163909>] ? sync_buffer+0x0/0x6e [<ffffffff8107f502>] ? wake_bit_function+0x0/0x5a [<ffffffff8116380c>] __wait_on_buffer+0x37/0x4d [<ffffffff8116386c>] wait_on_buffer+0x4a/0x65 [<ffffffff811655c1>] __bread+0x64/0x91 [<ffffffffa001ceb3>] read_inode_bitmap+0x4e/0x97 [ext2] [<ffffffffa001d476>] ext2_new_inode+0x53e/0xacb [ext2] [<ffffffffa00207a4>] ext2_mkdir+0x5b/0x146 [ext2] [<ffffffff81147472>] vfs_mkdir+0x82/0xf0 [<ffffffff811496b0>] sys_mkdirat+0xab/0x116 [<ffffffff81012f7a>] ? sysret_check+0x2e/0x69 [<ffffffff81093bb9>] ? trace_hardirqs_on_caller+0x139/0x175 [<ffffffff81149746>] sys_mkdir+0x2b/0x41 [<ffffffff81012f42>] system_call_fastpath+0x16/0x1b There are complete logs from two failed builds here: http://koji.fedoraproject.org/koji/getfile?taskID=1425449&name=build.log http://koji.fedoraproject.org/koji/getfile?taskID=1425486&name=build.log Search for "BUG". I'm not sure if it's relevant, but I observed the problem when running under qemu-kvm. Version-Release number of selected component (if applicable): kernel-2.6.31-0.11.rc0.git13.fc12.x86_64.rpm qemu-kvm-0.10.50-6.kvm86.fc12.x86_64.rpm How reproducible: Observed in 2/2 builds. Steps to Reproduce: 1. Build libguestfs 1.0.49 package in Rawhide. 2. Do 'make check' 3. Actual results: "BUG" line above causes guestfsd daemon to fail. Expected results: Shouldn't fail. Additional info: Builds that failed: http://koji.fedoraproject.org/koji/taskinfo?taskID=1425445 http://koji.fedoraproject.org/koji/taskinfo?taskID=1425478
I think I'm looking at the wrong thing in the build log. Marking as a duplicate (possibly) of bug 507066. *** This bug has been marked as a duplicate of bug 507066 ***